公开(公告)号：US12067918B2

公开(公告)日：2024-08-20

申请号：US18205913

申请日：2023-06-05

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Gyu Ban ,  Kyung Man Kim ,  Sang Jae Yeo

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/06 ,  G09G2320/029 ,  G09G2320/043

Abstract: A display device includes a data line, a pixel electrically connected to the data line, a data driver for outputting a data voltage, and a transmitter electrically connected between an output terminal of the data driver and the data line. The transmitter may transmit an instance of the data voltage to the data line in a first period. The transmitter may amplify a second instance of the data voltage to generate a reference voltage and then transmit the reference voltage to the data line in a second period different from the first period. The pixel includes a light emitting element for emitting light in response to the first instance of the data voltage. A voltage level of the reference voltage may be higher than a voltage level of the data voltage.

公开(公告)号：US11508308B2

公开(公告)日：2022-11-22

申请号：US17313043

申请日：2021-05-06

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hoon Shin ,  Kyung Man Kim

IPC: G09G3/3266 ,  H01L27/32 ,  G09G3/3291

Abstract: A display apparatus includes a display panel, a scan driver, a data driver and a timing controller. The display panel includes a plurality of pixels that are connected to a plurality of data lines and a plurality of scan lines having different lengths. The scan driver apply a plurality of scan signals to the plurality of scan lines. The data driver apply a plurality of data voltages to the plurality of data lines, and receive a plurality of sensing data that represent operating characteristics of all of the plurality of pixels from a plurality of sensing lines. The timing controller controls operations of the scan driver and the data driver, generates output image data considering the operating characteristics of all of the plurality of pixels and supply the output image data to the data drive.

公开(公告)号：US11328673B2

公开(公告)日：2022-05-10

申请号：US17124581

申请日：2020-12-17

Applicant: Samsung Display Co., Ltd.

Inventor： Kyung Man Kim ,  Seok Gyu Ban

IPC: G09G3/3266 ,  G09G3/3291

Abstract: A display device according to an exemplary embodiment of the present inventive concept includes: pixels; scan lines extending in a row direction and connected to the pixels; a data lines extending in a column direction and connected to the pixels; a receiving lines extending in the column direction and connected to the pixels; and a compensation circuit portion that generates first sensing data by receiving a current flowing to the pixels through the receiving lines, and generates a compensation value that compensates a characteristic of a driving transistor included in each of the pixels by multiplying the first sensing data by a calibration factor that corresponds to a position of each of the pixels, wherein the calibration factor includes a line calibration factors that correspond to the receiving lines.

公开(公告)号：US11264445B2

公开(公告)日：2022-03-01

申请号：US16820867

申请日：2020-03-17

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kyung Man Kim ,  Seok Gyu Ban ,  Sang Jae Yeo

IPC: G09G3/3291 ,  G09G3/3266 ,  H01L27/32 ,  G09G3/3233 ,  G09G3/3208 ,  G09G3/3283 ,  G09G3/3258

Abstract: A method of compensating for degradation of a display device includes sensing a first sensing current flowing through a sensing line connected to a pixel, which includes a programming period for writing a data voltage of a predetermined color to a storage capacitor of the pixel, sensing a sensing voltage of the sensing line, which includes a period for charging a line capacitor connected to the sensing line, estimating a voltage of an anode electrode of an organic light emitting diode using a second sensing current estimated from the first sensing current and the sensing voltage, and determining a degradation compensation value using the voltage of the anode electrode.

公开(公告)号：US11145244B2

公开(公告)日：2021-10-12

申请号：US17009676

申请日：2020-09-01

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Gyu Ban ,  Kyung Man Kim ,  Wook Lee

IPC: G09G3/32

Abstract: A display device includes a display unit, a timing controller, a data driver, and a sensing unit. The display unit includes a data line, a sensing line, and a pixel that includes a light emitting element and a transistor for providing a driving current to the light emitting element. The timing controller generates a first voltage value by compensating a first grayscale value and generates a second voltage value by remapping the first voltage value from a first voltage range to in a second voltage range. The data driver generates a data voltage based on the second voltage value and supplies the data voltage to the data line. The sensing unit provides an initialization voltage to the sensing line. A voltage difference between the data voltage and a threshold voltage of the transistor is greater than or equal to the initialization voltage.

公开(公告)号：US10964263B2

公开(公告)日：2021-03-30

申请号：US16563530

申请日：2019-09-06

Applicant: Samsung Display Co., Ltd.

Inventor： Sung Hwan Kim ,  Kyung Man Kim

IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3275

Abstract: A display device includes a display panel including a pixel coupled to a data line, a read-out line, a scan line, and a sensing line, a scan driver for generating scan and sensing signals to be supplied to the scan and sensing lines, a voltage controller for controlling a gate-on voltage of each of the scan and sensing signals to be supplied to the pixel during a mobility sensing period, a data driver for supplying a data signal to the data line, and a compensator for sensing current flowing from the pixel to the read-out line and compensate for the data signal, wherein the mobility sensing period includes a period during which each of the scan and sensing signals has a first voltage, a period during which the gate-on voltage of the scan and sensing signals changes, and a period during which the sensing signal has the first voltage.

公开(公告)号：US11908420B2

公开(公告)日：2024-02-20

申请号：US17990824

申请日：2022-11-21

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hoon Shin ,  Kyung Man Kim

IPC: G09G3/20 ,  G09G3/3266 ,  G09G3/3291 ,  G09G3/3233 ,  G09G5/06

CPC classification number: G09G3/3266 ,  G09G3/3291 ,  G09G3/3233 ,  G09G5/06 ,  G09G2300/043 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0866 ,  G09G2310/027 ,  G09G2310/0272 ,  G09G2310/0278 ,  G09G2310/08 ,  G09G2320/0223 ,  G09G2320/0285 ,  G09G2320/045

Abstract: A display apparatus includes a display panel, a scan driver, a data driver and a timing controller. The display panel includes a plurality of pixels that are connected to a plurality of data lines and a plurality of scan lines having different lengths. The scan driver apply a plurality of scan signals to the plurality of scan lines. The data driver apply a plurality of data voltages to the plurality of data lines, and receive a plurality of sensing data that represent operating characteristics of all of the plurality of pixels from a plurality of sensing lines. The timing controller controls operations of the scan driver and the data driver, generates output image data considering the operating characteristics of all of the plurality of pixels and supply the output image data to the data drive.

公开(公告)号：US11670240B2

公开(公告)日：2023-06-06

申请号：US17717261

申请日：2022-04-11

Applicant: Samsung Display Co., Ltd.

Inventor： Kyung Man Kim ,  Seok Gyu Ban

IPC: G09G3/3266 ,  G09G3/3291

CPC classification number: G09G3/3266 ,  G09G3/3291 ,  G09G2310/0291 ,  G09G2320/0693 ,  G09G2330/028

Abstract: A display device according to an exemplary embodiment of the present inventive concept includes: pixels; scan lines extending in a row direction and connected to the pixels; a data lines extending in a column direction and connected to the pixels; a receiving lines extending in the column direction and connected to the pixels; and a compensation circuit portion that generates first sensing data by receiving a current flowing to the pixels through the receiving lines, and generates a compensation value that compensates a characteristic of a driving transistor included in each of the pixels by multiplying the first sensing data by a calibration factor that corresponds to a position of each of the pixels, wherein the calibration factor includes a line calibration factors that correspond to the receiving lines.

公开(公告)号：US11514847B2

公开(公告)日：2022-11-29

申请号：US17475617

申请日：2021-09-15

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Gyu Ban ,  Kyung Man Kim ,  Wook Lee

IPC: G09G3/32

Abstract: A display device includes a display unit, a timing controller, a data driver, and a sensing unit. The display unit includes a data line, a sensing line, and a pixel that includes a light emitting element and a transistor for providing a driving current to the light emitting element. The timing controller generates a first voltage value by compensating a first grayscale value and generates a second voltage value by remapping the first voltage value from a first voltage range to in a second voltage range. The data driver generates a data voltage based on the second voltage value and supplies the data voltage to the data line. The sensing unit provides an initialization voltage to the sensing line. A voltage difference between the data voltage and a threshold voltage of the transistor is greater than or equal to the initialization voltage.

公开(公告)号：US10559250B2

公开(公告)日：2020-02-11

申请号：US15911715

申请日：2018-03-05

Applicant: Samsung Display Co., Ltd.

Inventor： Byung Ki Chun ,  Jun Gyu Lee ,  Kyung Man Kim

IPC: G09G3/30

Abstract: A display device includes a display panel including a plurality of pixels, and a display driver, wherein the image includes at least one X-axis edge pattern in which a difference between gradation values of the two pixels adjacent to each other in an X-axis direction is equal to or greater than a reference gradation value difference, and at least one Y-axis edge pattern in which a difference between gradation values of the two pixels adjacent to each other in a Y-axis direction is equal to or greater than the reference gradation value difference, and degree of movement of some areas of the image in the X-axis direction is greater than degree of movement of some areas of the image in the Y-axis direction when the number of the X-axis edge patterns included in the image is larger than the number of the Y-axis edge patterns included in the image.